MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
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Correct Answer: B. RNA forming structural and catalytic parts of ribosomes
Explanation:
RRNA combines with proteins to form ribosomal subunits.
It helps catalyze peptide-bond formation.
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Correct Answer: B. A DNA sequence that contributes to a functional product
Explanation:
Genes may encode proteins or functional RNA molecules.
Their expression is regulated.
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Correct Answer: C. Synthesis of a polypeptide using mRNA codons
Explanation:
Ribosomes read mRNA codons.
TRNAs deliver corresponding amino acids.
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Correct Answer: C. A DNA sequence that contributes to a functional product
Explanation:
Genes may encode proteins or functional RNA molecules.
Their expression is regulated.
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Correct Answer: D. Synthesis of a polypeptide using mRNA codons
Explanation:
Ribosomes read mRNA codons.
TRNAs deliver corresponding amino acids.
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Correct Answer: D. A DNA sequence that contributes to a functional product
Explanation:
Genes may encode proteins or functional RNA molecules.
Their expression is regulated.
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Correct Answer: A. Synthesis of a polypeptide using mRNA codons
Explanation:
Ribosomes read mRNA codons.
TRNAs deliver corresponding amino acids.
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Correct Answer: A. An alternative form of a gene
Explanation:
Alleles occupy the same locus on homologous chromosomes.
They may produce different trait variants.
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Correct Answer: A. Uracil
Explanation:
RNA uses uracil instead of thymine.
Uracil pairs with adenine.
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Correct Answer: B. RNA carrying coding information from DNA to ribosomes
Explanation:
MRNA contains codons specifying amino-acid sequence.
It is translated by ribosomes.
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Correct Answer: C. RNA carrying coding information from DNA to ribosomes
Explanation:
MRNA contains codons specifying amino-acid sequence.
It is translated by ribosomes.
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Correct Answer: B. me
Explanation:
The pronoun follows the preposition 'to' and functions as an object.
The objective form 'me' is correct.
